Canon PIXMA iP1500 Service Manual - Page 17

Accuracy: The margin of error of detection accuracy is +/-10% in normal printing. The margin of error is likely to be large in the following specific print patterns: When printing continuously using any one of the CMY colors of ink -> As the remaining ink level is calculated by total counted dot values of 3 colors of ink, if any of the C/M/Y inks is heavily consumed, the margin of error for remaining ink increases. When performing continuous BK solid printing -> With continuous printing, ink flow from the tank to the ink chamber can be interrupted, after which ink remains unused in the tank. Reset procedure: Perform the following operations from the printer driver's Maintenance: 1. In Low Ink Warning Setting, enable Display low ink warning. 2. In Ink Counter Reset, reset the applicable ink counter(s). Note: Be sure to reset the ink counter from the printer driver's Maintenance after replacing ink tanks. - Due to user error, the actual remaining ink level does not match the indicated remaining ink level, resulting in "ink out", etc. User error: Forgetting to reset the ink counter / ink counter reset other than when replacing ink tanks. - Due to the specific print pattern, the actual remaining ink level does not match the indicated remaining ink level, resulting in "ink out". Specific print pattern: Continuous printing using any one of the CMY colors of ink / continuous BK solid printing, etc. (5) Print head deep cleaning The printer has a print head deep cleaning (refreshing) function. Print head deep cleaning (refreshing): This is a deep cleaning function in order to resolve print failure due to ink clogging the print head. (The black ink is pigment-based, and clogs easier than other dye-based ink.) Perform from the printer driver's Maintenance. - Excessive ink consumption when conducting print head deep cleaning repeatedly. (The amount of ink used is approx. 10 to 15 times the normal manual cleaning amount.) Cleaning types, amount of ink used, and time required BK and CL ink drawing is simultaneously performed. Cleaning type Amount of ink used Manual cleaning Dot count cleaning Timer cleaning (24 hours to 2 weeks) BK: Approx. 0.12 g CL: Approx. 0.14 g Print head replacement Ink tank replacement Cleaning when the print head is not capped at printer power on BK: Approx. 0.42 g CL: Approx. 0.52 g Cleaning on arrival at user BK: Approx. 0.42 g Timer cleaning (2 weeks to 3 months) CL: Approx. 0.52 g Print head deep cleaning BK: Approx. 1.5 g Timer cleaning (3 months or more) CL: Approx. 2.2 g Time required Approx. 40 sec. Approx. 45 sec. Approx. 60 sec. Approx. 70 sec. ( 17 / 21 )